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nodeutiliation: create a usage snapshot

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This commit is contained in:
Jan Chaloupka
2024-10-11 17:05:00 +02:00
parent 7696f00518
commit dc9bea3ede
3 changed files with 80 additions and 24 deletions
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12
pkg/framework/plugins/nodeutilization/highnodeutilization.go
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@@ -44,6 +44,7 @@ type HighNodeUtilization struct {
underutilizationCriteria []interface{}
resourceNames []v1.ResourceName
targetThresholds api.ResourceThresholds
usageSnapshot *usageSnapshot
}
var _ frameworktypes.BalancePlugin = &HighNodeUtilization{}
@@ -84,6 +85,7 @@ func NewHighNodeUtilization(args runtime.Object, handle frameworktypes.Handle) (
targetThresholds: targetThresholds,
underutilizationCriteria: underutilizationCriteria,
podFilter: podFilter,
usageSnapshot: newRequestedUsageSnapshot(resourceNames, handle.GetPodsAssignedToNodeFunc()),
}, nil
}
@@ -94,9 +96,15 @@ func (h *HighNodeUtilization) Name() string {
// Balance extension point implementation for the plugin
func (h *HighNodeUtilization) Balance(ctx context.Context, nodes []*v1.Node) *frameworktypes.Status {
if err := h.usageSnapshot.capture(nodes); err != nil {
return &frameworktypes.Status{
Err: fmt.Errorf("error getting node usage: %v", err),
}
}
sourceNodes, highNodes := classifyNodes(
getNodeUsage(nodes, h.resourceNames, h.handle.GetPodsAssignedToNodeFunc()),
getNodeThresholds(nodes, h.args.Thresholds, h.targetThresholds, h.resourceNames, h.handle.GetPodsAssignedToNodeFunc(), false),
getNodeUsage(nodes, h.usageSnapshot),
getNodeThresholds(nodes, h.args.Thresholds, h.targetThresholds, h.resourceNames, false, h.usageSnapshot),
func(node *v1.Node, usage NodeUsage, threshold NodeThresholds) bool {
return isNodeWithLowUtilization(usage, threshold.lowResourceThreshold)
},